CPF06
EEPROM Memory Data Error
Yaskawa · Drive Fault Codes
What does CPF06 mean?
An error detected in the drive's EEPROM (Electrically Erasable Programmable Read-Only Memory), where parameters and operational data are stored. This can indicate data corruption or a faulty memory chip, potentially causing the drive to operate with incorrect settings or fail to store new ones.
Common Causes
- Corruption of data in the EEPROM due to power fluctuations or severe electrical noise
- Faulty EEPROM chip on the control board reaching end-of-life or experiencing failure
- Firmware update interruption or failure causing inconsistent data storage.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Perform a parameter initialization (e.g., using parameter A1-03 for a factory reset) and re-enter all parameters manually.
- 2
Cycle power to the drive to attempt a memory refresh and clear any transient memory errors.
- 3
If the fault persists after re-entering parameters, the control board containing the EEPROM may need replacement.
Verified technical data. Last updated: March 2026
Related Faults
Source: Yaskawa Drive Fault Codes